Re: [PATCH] Input: gpio-keys - do not BUG() on requested wakeirqs

[Andreas Kemnade]

On Wed, 04 Nov 2026 14:28:15 -0800
Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> wrote:

> Hi Andreas,
> 
> On Wed, Nov 04, 2026 at 05:03:05PM +0100, Andreas Kemnade wrote:
> > Having the IRQ handler called when enabled IRQs arrive should be considered
> > as a feature not as a bug. So do not BUG() there when this happens.
> >
> > Fixes: 3717194f24922 ("Input: gpio-keys - add system suspend support for dedicated wakeirqs")
> > Signed-off-by: Andreas Kemnade <andreas@xxxxxxxxxxxx>
> > ---
> >  drivers/input/keyboard/gpio_keys.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
> > index fbc31c5db3db..f1c31c5366f0 100644
> > --- a/drivers/input/keyboard/gpio_keys.c
> > +++ b/drivers/input/keyboard/gpio_keys.c
> > @@ -412,7 +412,7 @@ static irqreturn_t gpio_keys_gpio_isr(int irq, void *dev_id)
> >  {
> >  	struct gpio_button_data *bdata = dev_id;
> >  
> > -	BUG_ON(irq != bdata->irq);
> > +	BUG_ON((irq != bdata->irq) && (irq != bdata->wakeirq));
> >  
> >  	if (bdata->button->wakeup) {
> >  		const struct gpio_keys_button *button = bdata->button;  
> 
> Doesn't gpio_keys_irq_isr() have the same issue when a wakeirq is
> configured for an interrupt-only button?
> 
yes, it has.

> Also, neither gpio_keys_gpio_isr() nor gpio_keys_irq_isr() uses the irq
> argument for anything else, so instead of expanding the condition, could
> we simply drop the BUG_ON() from both handlers?
>
Sure, was just unsure about the intention of escalating things so much here.
I think we should trust the interrupt system a bit.

Regards,
Andreas